HM5425801BTT-10 datasheet(9/65 Pages) ELPIDA

Part #	HM5425801BTT-10

Description	256M SSTL_2 interface DDR SDRAM 143 MHz/133 MHz/125 MHz/100 MHz 4-Mword 횞 16-bit 횞 4-bank/8-Mword 횞 8-bit 횞 4-bank/ 16-Mword 횞 4-bit 횞 4-bank

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Manufacturer	ELPIDA [Elpida Memory]

Direct Link	http://www.elpida.com/en

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9 / 65 page

HM5425161B, HM5425801B, HM5425401B Series

Data Sheet E0086H20

9

Block Diagram

Column address

counter

Column address

buffer

Row address

buffer

Bank

select

Refresh

counter

Address register

Address (A12, BA0, BA1)

AY0 to AY11

AX0 to AX12

BA0, BA1

A0 to A12,

BA0, BA1

DQ*2

Input

buffer

Output

buffer

DQS

buffer

Row

decoder

Bank 0

*1

Notes: 1. 8192 row

× 512 column × 16 bit: HM5425161B

8192 row

× 1024 column × 8 bit: HM5425801B

8192 row

× 2048 column × 4 bit: HM5425401B

2. DQ0 to DQ15: HM5425161B

DQ0 to DQ7: HM5425801B

DQ0 to DQ3: HM5425401B

Row

decoder

Bank 1

Row

decoder

Bank 2

Row

decoder

CLK

CKE

DM,

DMU/DML

DLL

DQS,

DQSU/DQSL

CLK

RAS

CAS

WE

CS

Bank 3

Mode register

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HM5425801BTT-10 Datasheet(PDF) 9 Page - Elpida Memory

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